K.V.Kanimozhi, Dr.Rajakumarkrishnan, Dr.M.Venkatesan. 2020. “Weighted Frequent Pattern Based Agglomerative Clustering for Large Unstructured Text Data”. International Journal of Control and Automation 13 (2s), 151 -64. http://sersc.org/journals/index.php/IJCA/article/view/11736.